rats do much damages. they multiply very fast. (join into a complex sentence)
Answers
Answer:
As rats multiply very fast, they do much damage.
In a complex sentence, one part needs to depend on the other part. Here we say rats are doing much damage as a consequence of their quick multiplication.
If this was a compound sentence, both parts should be able to stand independently.
Rats do much damage and they multiply very fast.
The best way to identify a compound sentence is to check if there are two clear sentences in the same sentence, joined with the help of a conjunction like and, but, yet, so etc.
In a simple sentence, there should be only one part. Therefore, even if we originally have two sentences, we need to combine them together in such a way that there is only one subject and one predicate.
Fast- multiplying rats do much damage.
Here, 'fast multiplying rats' is our subject and our predicate is ' do much damage.'
Hope I helped.